Using `push` to create a field array in laravel - laravel

Question

I want to add a field array to mongoDB in laravel. I use push to create an array field. And I did it the following way:
public function addFieldByUser($id)
{
$product = Product::find($id);
if (empty($product)) {
abort(404);
}
if (!isset($product->image['productC'])) {
$product->push("image.productC", []);
}
}
I have successfully added the field productC in mongoDB, and here are the results:
{
"_id" : ObjectId("6295eb7210b4ec7cb72c9426"),
"name" : "test",
"image" : {
"productA" : [
{
"_id" : "6295eb6c8e88fb54231e66c3",
"link" : "https://example.com",
"image" : "dc1c94e421d4ab6a592bcae33ec97345.jpg",
"externalLink" : true
}
],
"productB" : [
{
"_id" : "6295eb957cb6f9350f0f0de5",
"link" : "https://example.com",
"image" : "1ccd4b1d7601a3beb213eb5b42c5d9bf.jpg",
"externalLink" : true
}
],
"productC" : [
[]
]
}
}
But inside productC there is one more sub-array. But my original intention was to add field productC as an empty array
I would like to have a result like this:
{
"_id" : ObjectId("6295eb7210b4ec7cb72c9426"),
"name" : "test",
"image" : {
"productA" : [
{
"_id" : "6295eb6c8e88fb54231e66c3",
"link" : "https://example.com",
"image" : "dc1c94e421d4ab6a592bcae33ec97345.jpg",
"externalLink" : true
}
],
"productB" : [
{
"_id" : "6295eb957cb6f9350f0f0de5",
"link" : "https://example.com",
"image" : "1ccd4b1d7601a3beb213eb5b42c5d9bf.jpg",
"externalLink" : true
}
],
"productC" : []
}
}
Anyone please give me any suggestions, I'm new to mongoDB so it's really giving me a hard time. Thank you very much

Answer 1

Push doesn't make sense here. push implies that you have an array that you want to add a value to. But here you just want to initialise an array, so you'll have to use another method.
(Also notably if you use push on an eloquent model it'll also save it to the database)
You could do something like $product->image['productC'] = []
And then $product->save() if you want to save it